# -*- coding:utf-8 -*-
from contextlib import closing
import requests, json, re, os, sys, random
from ipaddress import ip_address
from subprocess import Popen, PIPE
import urllib


class DouYin(object):
    def __init__(self, width=500, height=300):
        """
        抖音App视频下载
        """
        rip = ip_address('0.0.0.0')
        while rip.is_private:
            rip = ip_address('.'.join(map(str, (random.randint(0, 255) for _ in range(4)))))
        self.headers = {
            'accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8',
            'accept-encoding': 'gzip, deflate, br',
            'accept-language': 'zh-CN,zh;q=0.9',
            'pragma': 'no-cache',
            'cache-control': 'no-cache',
            'upgrade-insecure-requests': '1',
            'user-agent': 'Mozilla/5.0 (Linux; U; Android 5.1.1; zh-cn; MI 4S Build/LMY47V) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/53.0.2785.146 Mobile Safari/537.36 XiaoMi/MiuiBrowser/9.1.3',
            'X-Real-IP': str(rip),
            'X-Forwarded-For': str(rip),
        }

    def get_video_urls(self, user_id, type_flag='f'):
        """
        获得视频播放地址
        Parameters:
            user_id：查询的用户UID
        Returns:
            video_names: 视频名字列表
            video_urls: 视频链接列表
            nickname: 用户昵称
        """
        video_names = []
        video_urls = []
        share_urls = []
        max_cursor = 0
        has_more = 1
        i = 0
        share_user_url = 'https://www.douyin.com/share/user/%s' % user_id
        share_user = requests.get(share_user_url, headers=self.headers)
        while share_user.status_code != 200:
            share_user = requests.get(share_user_url, headers=self.headers)
        _dytk_re = re.compile(r"dytk\s*:\s*'(.+)'")
        dytk = _dytk_re.search(share_user.text).group(1)
        _nickname_re = re.compile(r'<p class="nickname">(.+?)<\/p>')
        nickname = _nickname_re.search(share_user.text).group(1)
        urllib.request.urlretrieve(
            'https://raw.githubusercontent.com/Jack-Cherish/python-spider/master/douyin/fuck-byted-acrawler.js',
            'fuck-byted-acrawler.js')
        try:
            Popen(['node', '-v'], stdout=PIPE, stderr=PIPE).communicate()
        except (OSError, IOError) as err:
            print('请先安装 node.js: https://nodejs.org/')
            sys.exit()
        user_url_prefix = 'https://www.douyin.com/aweme/v1/aweme/favorite' if type_flag == 'f' else 'https://www.douyin.com/aweme/v1/aweme/post'
        print('解析视频链接中')
        while has_more != 0:
            process = Popen(['node', 'fuck-byted-acrawler.js', str(user_id)], stdout=PIPE, stderr=PIPE)
            _sign = process.communicate()[0].decode().strip('\n').strip('\r')
            user_url = user_url_prefix + '/?user_id=%s&max_cursor=%s&count=21&aid=1128&_signature=%s&dytk=%s' % (
            user_id, max_cursor, _sign, dytk)
            req = requests.get(user_url, headers=self.headers)
            while req.status_code != 200:
                req = requests.get(user_url, headers=self.headers)
                print(req)
            html = json.loads(req.text)
            print(html)
            try:
                while html['aweme_list'] == []:
                    i = i + 1
                    print('已重新链接' + str(i) + '次 (若超过100次，请ctrl+c强制停止再重来)' + '\r')
                    sys.stdout.write('已重新链接' + str(i) + '次 (若超过100次，请ctrl+c强制停止再重来)' + '\r')
                    sys.stdout.flush()
                    process = Popen(['node', 'fuck-byted-acrawler.js', str(user_id)], stdout=PIPE, stderr=PIPE)
                    _sign = process.communicate()[0].decode().strip('\n').strip('\r')
                    user_url = user_url_prefix + '/?user_id=%s&max_cursor=%s&count=21&aid=1128&_signature=%s&dytk=%s' % (
                    user_id, max_cursor, _sign, dytk)
                    req = requests.get(user_url, headers=self.headers)
                    while req.status_code != 200:
                        req = requests.get(user_url, headers=self.headers)
                    html = json.loads(req.text)
            except:
                pass
            i = 0
            for each in html['aweme_list']:
                try:
                    url = 'https://aweme.snssdk.com/aweme/v1/play/?video_id=%s&line=0&ratio=720p&media_type=4&vr_type=0&test_cdn=None&improve_bitrate=0'
                    uri = each['video']['play_addr']['uri']
                    video_url = url % uri
                except:
                    continue
                share_desc = each['share_info']['share_desc']
                if os.name == 'nt':
                    for c in r'\/:*?"<>|':
                        nickname = nickname.replace(c, '').strip().strip('\.')
                        share_desc = share_desc.replace(c, '').strip()
                share_id = each['aweme_id']
                if share_desc in ['抖音-原创音乐短视频社区', 'TikTok', '']:
                    video_names.append(share_id + '.mp4')
                else:
                    video_names.append(share_id + '-' + share_desc + '.mp4')
                share_urls.append(each['share_info']['share_url'])
                video_urls.append(video_url)
            max_cursor = html['max_cursor']
            has_more = html['has_more']

        return video_names, video_urls, share_urls, nickname

    def get_download_url(self, video_url, watermark_flag):
        """
        获得带水印的视频播放地址
        Parameters:
            video_url：带水印的视频播放地址
        Returns:
            download_url: 带水印的视频下载地址
        """
        # 带水印视频
        if watermark_flag == True:
            download_url = video_url.replace('/play/', '/playwm/')
        # 无水印视频
        else:
            download_url = video_url.replace('/playwm/', '/play/')

        return download_url

    def video_downloader(self, video_url, video_name, watermark_flag=False):
        """
        视频下载
        Parameters:
            video_url: 带水印的视频地址
            video_name: 视频名
            watermark_flag: 是否下载带水印的视频
        Returns:
            无
        """
        size = 0
        video_url = self.get_download_url(video_url, watermark_flag=watermark_flag)
        with closing(requests.get(video_url, headers=self.headers, stream=True)) as response:
            chunk_size = 1024
            content_size = int(response.headers['content-length'])
            if response.status_code == 200:
                sys.stdout.write('  [文件大小]:%0.2f MB\n' % (content_size / chunk_size / 1024))

                with open(video_name, 'wb') as file:
                    for data in response.iter_content(chunk_size=chunk_size):
                        file.write(data)
                        size += len(data)
                        file.flush()

                        sys.stdout.write('  [下载进度]:%.2f%%' % float(size / content_size * 100) + '\r')
                        sys.stdout.flush()

    def run(self):
        """
        运行函数
        Parameters:
            None
        Returns:
            None
        """
        self.hello()
        print('搜索api需要登录，暂时使用UID下载\n分享用户页面，用浏览器打开短链接，原始链接中/share/user/后的数字即是UID')
        user_id = input('请输入ID (例如95006183):')
        user_id = user_id if user_id else '95006183'
        watermark_flag = '0'#input('是否下载带水印的视频 (0-否(默认), 1-是):')
        watermark_flag = watermark_flag if watermark_flag != '' else '0'
        watermark_flag = bool(int(watermark_flag))
        type_flag = 'p'#input('f-收藏的(默认), p-上传的:')
        type_flag = type_flag if type_flag != '' else 'f'
        save_dir = 'D:/Download/'  # input('保存路径 (例如"E:/Download/", 默认"./Download/"):')
        save_dir = save_dir if save_dir else "./Download/"
        video_names, video_urls, share_urls, nickname = self.get_video_urls(user_id, type_flag)
        nickname_dir = os.path.join(save_dir, nickname)
        if not os.path.exists(save_dir):
            os.makedirs(save_dir)
        if nickname not in os.listdir(save_dir):
            os.mkdir(nickname_dir)
        if type_flag == 'f':
            if 'favorite' not in os.listdir(nickname_dir):
                os.mkdir(os.path.join(nickname_dir, 'favorite'))
        print('视频下载中:共有%d个作品!\n' % len(video_urls))
        for num in range(len(video_urls)):
            print('  解析第%d个视频链接 [%s] 中，请稍后!\n' % (num + 1, share_urls[num]))
            if '\\' in video_names[num]:
                video_name = video_names[num].replace('\\', '')
            elif '/' in video_names[num]:
                video_name = video_names[num].replace('/', '')
            else:
                video_name = video_names[num]
            video_path = os.path.join(nickname_dir, video_name) if type_flag != 'f' else os.path.join(nickname_dir,
                                                                                                      'favorite',
                                                                                                      video_name)
            if os.path.isfile(video_path):
                print('视频已存在')
            else:
                self.video_downloader(video_urls[num], video_path, watermark_flag)
            print('\n')
        print('下载完成!')

    def hello(self):
        """
        打印欢迎界面
        Parameters:
            None
        Returns:
            None
        """
        print('*' * 100)
        print('\t\t\t\t抖音App视频下载小助手')
        print('\t\t作者:猛猛小蚂蚁')
        print('*' * 100)


if __name__ == '__main__':
    douyin = DouYin()
    douyin.run()


#通过
'''
105891291453


'''

#未通过
'''
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94735438469
70542844270
91710706818
70542844270
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98183725043

'''